Locking mechanism



Aug. 14, 1928.

E. S. HUTTON LOCKING MECHANI SM Original Filed Aug. 5, 1925 INVENTOR.

ATTORNEY.

Patented Aug. 14,1928. 1,680,618 UNITED STATES PATENT OFFICE.

EARL S. HU'ITON, OF DETROIT, MICHIGAN, ASSIGNOR F ONE-THIRD TO ALAN H. PEARSON, 0F DETROIT, MICHIGAN.

LOCKING MECHANISM. Application filed August 3, 1925, Serial No. 48,008. Renewed May 31, 1928 My invention relates to improved looking with a work holder of a well known form mechanism intended particularly for use in having a base 10, uprights 12, one at each connection with work holders and other corner, and a top plate 14-. This plate 14 similar devices. forms one member of a pair of work retain- An object is to provide simple, inexpening members, the other member being sive, positively operating mechanism adaptformed by a movable plunger 16 which is ed to securely, automatically, releasably lock adapted to be raised and lowered by suitable an adjustable work holder to grip the piece mechanism, such as a rack and pinion couof work carried thereby. pling. I have here shown the spindle as A further object is to provide in connecprovided with a rack 18 meshed with a tion-with a work support comprising in part pinion 20 formed on the shaft 22. 24 is a rotatable shaft, manually operable means a supporting member for the shaft 22. To for rotating the shaft and locking mecharotate the shaft to actuate the member 16 nism adapted to automatically releasably there is provided a handle or crank 26.

15 lock the shaft againstan impulse of rotation My invention relates to in: roved mechaapplied thereto other than through the main nism for coupling this crank ually operating means provided. shaft 22 to rotate the shaft to raise and lower An important feature is the employment the movable work supporting member 16 and in. mechanism of the character described havto retain the shaft at any position to which ing' a rotatable shaft provided with a itmay have been rotated to actuate said 7 notched disk and bearin for the disk, of an movable work supporting member in such :1 operating crank couple with the shaft by manner that it is held against any back means engaged in the notch of the disk to ro-- thrust exerted thereon from the work suptate the shaft through the disk, such means porting member but is quickly and easily re- 25 being adapted to automatically releasably leasableupon an impulse of rotation app ied so lock the shaft against rotation upon an imthereto from the crank. pulse of rotation applied thereto other than I provide a pair of spaced apartsupportthrough the crank by locking the disk within ing standards 28 secured at 30 to the base. its bearing. The shaft 22 carries a. pair of spaced disks 36 A meritorious feature is the provision in 32 having adjoining hubs 34. One of these work supporting mechanism provided with a disks is mounted in a bearing in one of the rotatable shaft, of a pair of spaced notched standards 28. The other disk is mounted in disks fixed to the shaft mounted within s a a corresponding bearing in the opposite tionary bearings and a handle to rotate the standard.

35 shaft mounted between the disks and cow These disks are cut away or notched as at pied with the shaft for rotation by means en- 36 at a. plurality of corresponding points. gagged in the notches of the disks adjacent to They are secured to the shaft by keys 38. the bearings, whereby the shaft may be free The cut-outs or notches in the disks are adjaly rotated from the handle but will be locked cent to the hearings in the supports.

4o against rotation upon an impulse applied The crank 26 is freely mounted between from the shaft to the handle. the disks upon their adjolning hubs 34. This Other objects and details of construction, crank carries a plurality of freely rotatable together with important advantages and feapins 40 which project into the notches or tures of my improvement, will appear more cut outs 36 of the disks, as shown in Figs. 2

45 fully from the following specification, up and 3, and are held in place by suitable m9 pended claims, and accompanying drawings, means such as Washers l2 disposed on the In which: shaft 22. The outer washer 42 is held on the Figure 1 is a perspective View of a 'comshaft by a retaining spring 4-4- rnon form of work holder provided with my In the operation of the dev ce when the i t, handle or crank 26 1s swung in a counter- Fig. 2 is an enlarged elevation of my inclockwise direction from the position shown vention. in Fig. l, the shaft 22 is rotated to raise the Fig. 3 is a cross-sectional view taken on work supporting member 16 to grip the work line 33 of Fig. 2. against the plate 14, the rollers or ms 40 it I have shown my invention in connection bearing the flattened sides of the disks 32 my and imparting a rotatable motion to the shaft 22 to actuate the work support 16. \Vhen this member 16 has been raised to hold the work against the plate 1d continuation of the swinging movement of the handle wedges the rollers between the flat faces of the disks and the bearings for the disks in the standards and locks the device in position to rigidly support the work. Any back pressure upon the shaft from the work tending to release the grip upon the work serves to wedge the pins more tightly in place and the release can only be accomplished through the operation of the crank 26. By swinging the handle in a clockwise direction the pins are moved out of their wedged position and against the shoulders on the flattened faces of the disks and the shaft is operated in a clockwise direction to lower the work supporting member 16, releasing the work.

Obviously this locking means might be employed in connection with work retaining devices different from that illustrated in the drawing.

What I claim is:

1. In locking mechanism, a rotatable shaft, a disk fixed to the shaft, a casing surrounding the disk, said disk having a cut-out adjacent to the casing, a crank mounted upon the shaft to rotate the same, said crank coupled with the shaft through the disk by a part engaged in the cut-out of the disk and adapted to be wedged between the disk and the casing upon application of an impulse of rotation to the disk from the shaft.

2. In locking mechanism, a rotatable shaft, a notched disk on the shaft, said disk having a hub, a hearing for the disk, a crank mounted on the hub ofthe disk adjacent to the bearing and provided with a pin extending into the notch of the disk adjacent to the bearing to couple the shaft to the crank for rotation thereby, said pin adapted to be wedged between the bearing and the disk to prevent the rotation of the shaft counter the crank.

3. In locking mechanism, a rotatable shaft, a notched disk fixed to the shaft, a bearing for the disk, a crank rotatably mounted upon the shaft adajacent to the disk having a rotatable pin extending into the notch of the disk adjacent to its bearing to couple the shaft to the crank through the disk for rotation, said pin adapted to be wedged between the disk and its bearing to prevent rotation of the shaft upon an impulse of rotation applied thereto counter the crank.

4. In locking mechanism, a pair of spaced supports, a rotatable shaft having spaced notched disks fixed thereto, one mounted within a bearing in each support, a crank iotatably mounted upon the shaft between the. disks provided with a pin extending into the notche.= of the disks to couple the shaft to the crank to be rotated thereby, said pin adapted to be wedged between the disks and their bearings to prevent rotation of the shaft upon an impulse of rotation applied therefrom to the disks.

5. In locking mechanism, a pair of spaced supports, a rotatable shaft carrying a pair of correspondingly notched disks, one having a bearing in each support, a crank mounted upon the shaft between the disks provided with a plurality of pins extending into the notches of the disks to couple the crank to the shaft for rotation, said pins adapted to lock the disks against rotation upon an impulse of rotation applied thereto from the shaft.

(3. In locking mechanism, a pair of spaced supports, a rotatable shaft carrying a pair of spaced correspondingly notched disks having adjoining hubs, said disks having bearings in the supports, a crank rotatably mounted between the disks upon said hubs, said crank provided with rotatable pins extending into the notches of the disks adjoining their bearings, coupling the crank to the shaft to rotate the shaft and adapted to lock the disks against rotation upon an impulse of rotation applied thereto from the shaft.

7. In a locking mechanism, a rotatable shaft, a disk fixed to the shaft, a casing disposed extcriorly of the disk, said disk having a cut-out adjacent to the casing, a crank to rotate the shaft, said crank coupled with the shaft by a rotatable part loosely engaged within the cut-out of the disk and adapted to be wedged between the disk and the casing to relcasably lock the shaft against rotation upon an impulse of rotation imparted from the shaft to the disk.

8. In locking mechanism, a rotatable shaft, a notched disk fixed to the shaft, a casing surroimding the disk, a crank mounted upon the shaft, a roller coupling the crank with the disk, said roller being mounted within the notch of the disk and adapted to be wedged between the disk and the casing upon an impulse of rotation imparted from the shaft to the disk.

9. In locking mechanism for a work holder having a movable work support and a rotatable shaft to actuate said support, a disk fixed to the shaft, a casing about the disk, said disk having a recess adjacent to said casing, a crank on the shaft, 9. rotatable pin coupling the disk with the crank for rotation upon swinging movement of the crank, said pin loosely disposed within the recess of the disk and adapted to be wedged between the disk and the casing to lock the shaft against rotation upon an impulse of rotation applied from the shaft to the crank.

10. Locking mechanism coniprising, in combination. a rotatably supported shaft, a. disk carried thereby, a casing encircling the lit disk, said disk having a flattened face opposite the encircling crank member coupled with the disk to rotate the shaft, a locking, pin movably arrangedbetween the flattened face of the disk and the encircling Wall of the casing to be wedged therebetween upon an impulse of rotation applied to the disk from the shaft in a given direction, said locking pin adapted to be released upon an impulse of rotation applied to the disk by the crank the same direction.

11. Locking mechanism comprising, in combination, a rotatably supported shaft, a disk carried thereby, a casting encircling the disk, said disk provided with a flattened face extending along a chord of the disk, a crank member arranged alongside the disk andcoupled therewith to rotate the shaft, a lock ing pin slidably arranged between the flattened face of the disk and the opposite wall of the casing to be wedged therebetween upon an impulse of rotation applied by the shaft to the disk in a given direction, said crank member having a part adapted to act upon the locking pin to urge it out of its wedged position upon a similar impulse of rotation applied therefrom to the disk.

12. Locking mechanism comprising, in combination, a rotatably supported shaft, a disk carried thereby, a casing encircling the disk,

said disk provided with a flattened face ex-' tending along a chord thereof, a crank member coupled with, the disk to rotate the shaft, a locking element movably disposed between the flattened face of of the casing to be wedged therebetween upon the application of an impulse of rotation by the crank member to the disk in a given direction and to be wedged between said flattened face and the wall of the casing to prevent reverse rotation of the shaft upon a reverse impulse of rotation applied to the disk from the shaft, said locking ele ment adapted to be engaged by a part,of the crank member to be dislodged from its wedged position to permit reverse rotation of the shaft upon the application of said reverse impulse of rotation to the disk by the crank member. I

13. Locking mechanism comprising, in combination, a rotatably supported shaft having an annular portion provided with at least one flattened peripheral face, a stawall of the casing; a

member in its wedged position the disk and the wall 1 tionary casing encircling said annular portion, a crank member coupled with the shaft through said annular portion to rotate the shaft in either direction, a locking pin movably arranged between the flattened face of the annular position and the wall of the casing to be wedged therebetween upon an impulse of rotation transmitted from the shaft to the annular portion in a given direction, said crank member having a part adapted to act upon said locking pin to dislodge it from upon rotation applied therefrom to the annular portion of the shaft to rotate the shaft in the same direction.

14. Looking mechanism comprising, in combinaton, a rotatably supported shaft, a bearing encircling a. portion of the shaft, said portion having a flattened face positioned opposite the encircling and terminating at one crank member coupled with said portion to rotate the shaft, a locking element movably arranged between said flattened face and the bearing to move away from said shoulder and toward the bearing to be wedged between the wall of the bearing and the fiattened face to prevent rotation of the shaft upon application of a given impulse of rotation to the shaft, said crank member adapted to move said locking element toward said shoulder dislodging the same and releasing the shaft for rotation upon rotation of the crank in a given direction.

15. Locking mechanism comprising, in combination, a rotatably supported shaft iaving an annular portion provided with at east one flattened peripheral face, a stationary casing encircling said annular portion, a crank member coupled with said annular portion to rotate the shaft, a locking pin movably disposed between the flattened face of the annular portion and the wall of the casing to be wedged therebetween upon a determined impulse of rotation transmitted from the shaft to the annular portion, said crank having a part engaging said pin to dislodge it from its wedged position upon rotation of the crank in a given direction and to rotate the shaft through the pin in said direction.

In testimony whereof, I sign this specification.

EARL s. HUTTON.

wall of the bearing end in a shoulder, a 

